Publications by authors named "Marcel G W Dijkgraaf"

Background: Despite the benefits of video-assisted thoracoscopic surgery (VATS), postoperative acute pain and nerve injury are still present and contribute to early persistent and chronic pain. The purpose of this study is to describe the incidence of early persistent pain (EPP) after VATS, which remains unexplored, to enhance patient care and promote awareness among clinicians regarding this clinical condition.

Methods: A single-center prospective cohort study that included consecutive patients undergoing VATS between January 2021 and March 2023.

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Background: Patients with stable chest pain suspected of coronary artery disease (CAD) usually undergo multiple diagnostic tests to confirm or rule out obstructive CAD. Some tests may not effectively assess the presence of CAD, precluding optimal treatment. A diagnostic strategy of upfront computed tomography coronary angiography (CTCA) combined with optimal medical therapy (OMT) tailored to the extent of CAD may be superior to standard care in preventing major adverse cardiac events.

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  • The study evaluated the cost-effectiveness of therapeutic drug monitoring (TDM)-guided mercaptopurine treatment for ulcerative colitis (UC) patients who didn’t respond to traditional medication compared to a placebo.
  • Data was collected from a controlled trial and analyzed over one year, considering various costs related to healthcare and societal impacts.
  • Results suggested that while mercaptopurine had slightly higher costs per additional patient achieving remission, it provided significant societal cost savings and had an 80% chance of being cost-effective within a specific budget for healthcare spending.
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  • Researchers studied if using special sutures (triclosan-coated sutures) helps prevent infections and problems after surgery on the belly.
  • They found that these special sutures might reduce the chances of infections, but they weren't sure it helped with another issue called abdominal wall dehiscence.
  • Overall, while no strong proof was found to say these sutures prevent the belly problem, they do seem to lower infection rates after surgery.
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Guideline-directed medical therapy (GDMT) has clear benefits on morbidity and mortality in patients with heart failure; however, GDMT use remains low. In the multicenter, open-label, investigator-initiated ADMINISTER trial, patients (n = 150) diagnosed with heart failure and reduced ejection fraction (HFrEF) were randomized (1:1) to receive usual care or a strategy using digital consults (DCs). DCs contained (1) digital data sharing from patient to clinician (pharmacotherapy use, home-measured vital signs and Kansas City Cardiomyopathy Questionnaires); (2) patient education via a text-based e-learning; and (3) guideline recommendations to all treating clinicians.

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  • * Data were compared from two periods: pre-VFC (2018) with 101 patients and post-VFC (2022) with 113 patients, showing a decrease in average wait time from 8.9 days to 7.6 days.
  • * Additionally, the percentage of surgeries delayed beyond 14 days dropped from 7% to 5%, indicating improved surgical planning and efficiency after VFC implementation.
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Importance: The 1-year results of the SECURE trial, a randomized trial comparing a restrictive strategy vs usual care for select patients with symptomatic cholelithiasis for cholecystectomy, resulted in a significantly lower operation rate after restrictive strategy. However, a restrictive strategy did not result in more pain-free patients at 1 year.

Objective: To gauge pain level and determine the proportion of pain-free patients, operation rate, and biliary and surgical complications at the 5-year follow-up.

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Background: High-output intestinal fistulas and small bowel enterostomies are associated with morbidity and mortality. Current standard treatment for output reduction consists of fluid and dietary restrictions and medical therapy. There is conflicting evidence regarding the use of somatostatin analogues for output reduction.

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Aims: Diabetes-related foot ulcers are common, costly, and frequently recur. Multiple interventions help prevent these ulcers. However, none of these have been prospectively investigated for cost-effectiveness.

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Background And Objective: The Levodopa in EArly Parkinson's disease study showed no effect of earlier versus later levodopa initiation on Parkinson's disease (PD) progression over 80 weeks. We now report the effects over 5 years.

Methods: The Levodopa in EArly Parkinson's disease study randomly assigned patients to levodopa/carbidopa 300/75 mg daily for 80 weeks (early start) or to placebo for 40 weeks followed by levodopa/carbidopa 300/75 mg daily for 40 weeks (delayed start).

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Background: Chronic total coronary occlusions (CTO) substantially increase the risk for sudden cardiac death. Among patients with chronic ischemic heart disease at risk for sudden cardiac death, an implantable cardioverter defibrillator (ICD) is the favored therapy for primary prevention of sudden cardiac death. This study sought to investigate the impact of CTOs on the risk for appropriate ICD shocks and mortality within a nationwide prospective cohort.

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Importance: When considering nonoperative treatment in a patient with acute appendicitis, it is crucial to accurately rule out complicated appendicitis. The Atema score, also referred to as the Scoring System of Appendicitis Severity (SAS), has been designed to differentiate between uncomplicated and complicated appendicitis but has not been prospectively externally validated.

Objective: To externally validate the SAS and, in case of failure, to develop an improved SAS (2.

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Background: The primary treatment of ulcerative colitis (UC) is medical therapy using a standard step-up approach. An appendectomy might modulate the clinical course of UC, decreasing the incidence of relapses and reducing need for medication. The objective of the ACCURE trial is to assess the efficacy of laparoscopic appendectomy in addition to standard medical treatment in maintaining remission in UC patients.

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Background: Vital signs measurements on the ward are performed intermittently. This could lead to failure to rapidly detect patients with deteriorating vital signs and worsens long-term outcome. The aim of this study was to test the hypothesis that continuous wireless monitoring of vital signs on the postsurgical ward improves patient outcome.

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Aims: Many heart failure (HF) patients do not receive optimal guideline-directed medical therapy (GDMT) despite clear benefit on morbidity and mortality outcomes. Digital consults (DCs) have the potential to improve efficiency on GDMT optimization to serve the growing HF population. The investigator-initiated ADMINISTER trial was designed as a pragmatic multicenter randomized controlled open-label trial to evaluate efficacy and safety of DC in patients on HF treatment.

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Background: Guidelines are inconclusive on whether contrast-enhanced MRI using gadoxetic acid and diffusion-weighted imaging should be added routinely to CT in the investigation of patients with colorectal liver metastases who are scheduled for curative liver resection or thermal ablation, or both. Although contrast-enhanced MRI is reportedly superior than contrast-enhanced CT in the detection and characterisation of colorectal liver metastases, its effect on clinical patient management is unknown. We aimed to assess the clinical effect of an additional liver contrast-enhanced MRI on local treatment plan in patients with colorectal liver metastases amenable to local treatment, based on contrast-enhanced CT.

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JCO Whether adjuvant hyperthermic intraperitoneal chemotherapy (HIPEC) might prevent peritoneal metastases after curative surgery for high-risk colon cancer is an ongoing debate. This study aimed to determine 5-year oncologic outcomes of the randomized multicenter COLOPEC trial, which included patients with clinical or pathologic T4N0-2M0 or perforated colon cancer and randomly assigned (1:1) to either adjuvant systemic chemotherapy and HIPEC (n = 100) or adjuvant systemic chemotherapy alone (n = 102). HIPEC was performed using a one-time administration of oxaliplatin (460 mg/m, 30 minutes, 42°C, concurrent fluorouracil/leucovorin intravenously), either simultaneously (9%) or within 5-8 weeks (91%) after primary tumor resection.

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Background: Preventing foot ulcers in people with diabetes can increase quality of life and reduce costs. Despite the availability of various interventions to prevent foot ulcers, recurrence rates remain high. We hypothesize that a multimodal treatment approach incorporating various footwear, self-management, and education interventions that matches an individual person's needs can reduce the risk of ulcer recurrence with beneficial cost-utility.

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  • The LEGACY study examines whether stopping aspirin right after PCI for NSTE-ACS and using only P2Y-inhibitor therapy is safer and effective compared to continuing dual antiplatelet therapy (DAPT) for 12 months.
  • The research involves 3,090 patients, comparing the incidence of bleeding events between those on aspirin and those who aren’t, while also ensuring no significant increase in serious health issues like heart attacks or strokes.
  • This study is groundbreaking as it specifically investigates the effects of immediately omitting aspirin, making it a crucial step in understanding optimal post-PCI treatment options.
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Background: The oncological safety of minimally invasive surgery has been questioned for several abdominal cancers. Concerns also exist regarding the use of minimally invasive distal pancreatectomy (MIDP) in patients with resectable pancreatic cancer as randomised trials are lacking.

Methods: In this international randomised non-inferiority trial, we recruited adults with resectable pancreatic cancer from 35 centres in 12 countries.

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  • The PISA-II trial found that using short-term anti-TNF therapy followed by surgical closure results in better healing of perianal fistulas in Crohn's disease patients compared to anti-TNF therapy alone after 18 months.
  • This study involved long-term follow-up of patients from the PISA-II trial, with data collected from 91 participants across multiple hospitals in the Netherlands and Italy, focusing on the effectiveness of each treatment method.
  • Findings indicated that over a median follow-up period of 5.7 years, healing rates remained similar in both treatment groups, with a high percentage of participants remaining in the study.
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Objective: To compare the long-term outcomes of immediate drainage versus the postponed-drainage approach in patients with infected necrotizing pancreatitis.

Background: In the randomized POINTER trial, patients assigned to the postponed-drainage approach using antibiotic treatment required fewer interventions, as compared with immediate drainage, and over a third were treated without any intervention.

Methods: Clinical data of those patients alive after the initial 6-month follow-up were re-evaluated.

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Background: Postoperative complications following distal pancreatectomy (DP) are common, especially postoperative pancreatic fistula (POPF). In order to design adequate prophylactic strategies, it is of relevance to determine the costs of these complications. An overview of the literature on the costs of complications following DP is lacking.

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Background: RCTs are essential in guiding clinical decision-making but are difficult to perform, especially in surgery. This review assessed the trend in volume and methodological quality of published surgical RCTs over two decades.

Methods: PubMed was searched systematically for surgical RCTs published in 1999, 2009, and 2019.

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